Numerical Investigation into In-Plane Crushing of Tube-Reinforced Damaged 5052 Aerospace Grade Aluminum Alloy Honeycomb Panels

Materials

卷:14

Younes Djemaoune¹  Marjan Dodic¹  Daniel Radulovic¹  Branimir Krstic¹  Stefan Rasic¹ 

[1] Section of Aerospace Engineering and Mechanics, Department of Military Mechanical Engineering, Military Academy, University of Defence in Belgrade, Military Academy, 11042 Belgrade, Serbia;

关键词: aluminum honeycomb;    in-plane compression;    finite element analysis;    energy absorption;    crashworthiness;   

DOI  :  10.3390/ma14174992

来源: DOAJ

【 摘 要 】

This paper aims to investigate the crashworthiness performance degradation of a damaged 5052 aluminum honeycomb panels under in-plane uniaxial quasi-static compression and the possibility of improving it using reinforcement tubes. The in-plane crushing behaviors and energy absorption capacities of the intact, damaged, and tube-reinforced damaged panels with different damage sizes in both X₁ and X₂ directions are numerically simulated by using the nonlinear FE method Abaqus/Explicit, and the crashworthiness performances are compared with each other. The validation of finite element model involves comparing the obtained simulation results with theoretical and experimental ones. Very good agreement between numerical, experimental, and theoretical results is achieved. The first maximum compressive load and the mean crushing load of the different honeycomb configurations are analyzed and compared through the load–strain curves. The energy absorption capacity of the damaged and the tube-reinforced damaged panels is calculated and then compared with their corresponding intact ones. The deformation modes are explained in detail. The obtained results show that the crashworthiness performance degradation is directly proportional to the damage size as well as the insertion of reinforcement tubes considerably improves in-plane crushing resistance of damaged honeycomb panels.

【 授权许可】

Unknown